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DM74LS243M датащи(PDF) 1 Page - Fairchild Semiconductor

номер детали DM74LS243M
подробное описание детали  Quadruple Bus Transceiver
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производитель  FAIRCHILD [Fairchild Semiconductor]
домашняя страница  http://www.fairchildsemi.com
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DM74LS243M датащи(HTML) 1 Page - Fairchild Semiconductor

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© 2000 Fairchild Semiconductor Corporation
DS006412
www.fairchildsemi.com
August 1986
Revised January 2000
DM74LS243
Quadruple Bus Transceiver
General Description
This four data line transceiver is designed for asynchro-
nous two-way communications between data buses. It can
be used to drive terminated lines down to 133
Ω.
Features
s Two-way asynchronous communication between data
buses
s PNP inputs reduce DC loading on bus line
s Hysteresis at data inputs improves noise margin
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Function Table
I
= Input
O
= Output
H
= HIGH Logic Level
L
= LOW Logic Level
Note 1: Possibly destructive oscillation may occur if the transceivers are
enabled in both directions at once.
Order Number
Package Number
Package Description
DM74LS243M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
DM74LS243N
N14A
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Control
Data Port
Inputs
Status
G AB
GBA
A
B
HH
O
I
L
H
(Note 1)
(Note 1)
H
L
ISOLATED
LL
I
O


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